baber/WOPTO huggingface dataset:
Patent GB-460846-A (GB)
Title: Improvements in or relating to electrically propelled battery vehicles
IPC: B60L11/18
Filed: 1935-07-02
Abstract: 460,846. Substituting sources in service; transmitting mechanical power. GENERAL ELECTRIC CO., Ltd. and CROFT, E. H. July 2, 1935, No. 18899. [Class 38 (iv)] An electrically propelled battery, vehicle is driven by a motor 1 normally supplied from a battery 3 carried on the vehicle and is provided with collector devices 4, 5, whereby the battery - and motor may be fed from a live rail or conductor arranged along parts of the route e.g. adjacent a station. The motor 1 is fed by the battery 3 until the devices 4, 5, contact the live conductor when relay 16 is energized opening contacts 14 and de-energizing relays 7-10 to cause opening of motoring contactors M1, M2 and resistance contactors 11, 12. Opening of M1 and energization of 16 cause closure of contacts 27, 28 so that relays 25, 26 are energized and cause closure of charging contactors C1, C2 connecting battery 3 to the supply. Closure of contactor C1 causes closure of contacts 15, re-energization of relays 7 and 8 to close motoring contactors M1, M2, resistance contactors 11, 12 subsequently closing in sequence under control of a current limit relay 17c which controls contacts 17. Closure of C1 also causes closure of contacts 38 and energization of relay 32 which closes maintaining contacts 33 and opens contacts 34 to de-energize relay 16 which then closes contacts 14. If the charging current falls below a predetermined value relay 24 opens maintaining contacts 30 and since contacts 27, 28 are open relays 25, 26 are de-energized and charging contactors C 1, C2 open, the motor circuit being unaffected so that the motor is still supplied by the battery. A switch 35 is provided whereby reconnection of the battery to the line may be effected manually opening and closing of the contactors M1, M2 and 11 and 12 taking place respectively before and after closure of the charging contactors The connection and reconnection of the battery to the line may be controlled by a voltage balance relay or the relay 24 may be a reverse current relay or alternatively a separate reverse current relay may be provided. Suitable charging control means may be provided and the relay 32 may have two positions in the low voltage position preventing connection of the battery to the line once it is disconnected and in the normal voltage position effecting reconnection of the battery to the line. In the arrangement above described alternatively or in addition the motor may be provided with shunt excitation which is increased above normal on connection of the battery to the line.
Patent GB-974069-A (GB)
Title: Improvements in or relating to thermionic converters
IPC: H01J45/00
Filed: 1963-05-13
Abstract: 974,069. Thermionic generators. SIEMENSSCHUCKERTWERKE A.G. May 13, 1963 [May 12, 1962], No. 18943/63. Heading H1D. In a thermionic converter in which the electron emitter 6 is heated by flame gases, it is found that hydrogen diffuses through the emitter into the working space of the converter. Accordingly, a part 9 of the converted envelope is made of a material having high specific gas permeability for the diffusion of hydrogen, e.g. palladium or niobium, so that in operation the hydrogen partial pressure P H2  within the envelope is less than it would be if this envelope part were less permeable to hydrogen. As shown, the converter comprises a tubular emitter 6 of molybdenum surrounded by an electron collector 7 having a palladium tube 9 sealed over an aperture therein. The tube 9 may be replaced by a dome-shaped member or other sheetmetal section fitted in a recess of collector 7 and through which hydrogen will diffuse provided that P H2  is greater than the hydrogen partial pressure P H3  outside the converter. The converter may contain caesium vapour.
Patent GB-275214-A (GB)
Title: Improvements in devices for protecting the exhausting socket of mercury lamps or the like consisting of glass
IPC: H01J9/40
Filed: 1927-07-18
Abstract: 275,214. Jenaer Glaswerk Schott & Gen. Aug. 2, 1926, [Convention date]. Low - pressure metallicvapour apparatus. - The exhausting socket b of glass vacuum vessels a containing mercury, for example, mercury lamps, is protected from injury by the mercury on sudden movements of the vessel by a stopper c extending from the socket b into, and fitting closely in, a constriction b<0> between the socket b and the vessel a. The stopper c projects into the vessel a and has a head c<0> preventing it from leaving the socket b. The stopper c has slight play in the constriction b<0> and need not be ground in.
Patent GB-353643-A (GB)
Title: Improvements in or relating to loose leaf binders
IPC: B42F13/12
Filed: 1930-06-21
Abstract: 353,643. Loose-leaf binders. MOORE'S MODERN METHODS, Ltd. and HESKINS, G. W. G., 12, St. Bride Street, London. June 21, 1930, No. 18982. [Class 146 (i).] A loose-leaf binding device formed as a unit separate from covers comprises a baseplate A carrying vertical filing posts B and connected by a flexible strip E to a metal carrying-bar D, between which and an attached strip F a sliding bar C for engaging and locking the ends of the posts is restrained from free sliding movement solely by frictional engagement between the bar C and the strip F. The strip F, which is connected to the bar D by rivets C<1> passing through elongated slots C<2> in the locking-bar C, is of millboard or like material which will afford sufficient frictional resistance to prevent unintentional movement of the locking-bar C. Keyhole slous C<3> in the locking-bar C engage notches B<1> on the ends of the posts B to lock them to the bar D. Holes D<1> are provided in the bar D and the strip F to accommodate the ends of the posts, and so that it can be seen if the parts C<3>, BI are engaging properly. The flexible material E encloses the parts C, F, D. The unit may be attached to a cover by riveting.
Patent GB-569935-A (GB)
Title: Improvements in curlers for use in waving hair
IPC: A45D2/32
Filed: 1943-11-15
Abstract: 569,935. Hair curling. SYMONS, G. H. F. Nov. 15, 1943, No. 18994. [Class 131] In hair curlers fo permanent waving o the type in which a tress of hair i wound on a mandre which is held by a clamp which em braces the root of the tress one end of the mandrel 18 is pro vided with notches 19 which may be en gaged by projection 17 provided in one of the cup-shaped bearings 13, 14 in which the mandrel 18 rests on the clamp 10. In operation the clamp 10 is placed in position on the scalp and the tress is wound on the mandrel which when the tress is wound fully and tightly is placed in the bearings 13, 14 so that the cooperation of the notches 19 and projections 17 prevent rotation of the mandrel and consequent unwinding of the tress.
Patent GB-676307-A (GB)
Title: Improvements in and relating to permanent way constructions
IPC: E01B3/36
Filed: 1949-07-19
Abstract: 676,307. Sleepers ; tie-bars. HEJLEK, F. July 19, 1949. [July 19, 1948 ; Aug. 10, 1948 ; Nov. 24, 1948] Nos. 19009/49. 19010/49 and 19011/49. Class 104(ii). A railway sleeper comprises a girder 3 of I or T-section, or an inverted length of an old railwav rail, with its ends seated and fixedly engaged within the upper portons of concrete blocks 2, so that the flange or foot of the girder is substantially level with the upper surface of the block to enable rails to be attached thereto in known manner. The lower flange and part of the web 5 of the girder intermediate the portions below the track rails 13 may be cut away to reduce the weight of the sleeper. Alternatively two short end lengths of normal section may be welded to an intermediate length with the bottom flange and part of the web removed. The faces of the concrete blocks are inclined towards the axis of the track, and the central portion of the girder or the parts immediately adjacent the concrete blocks are accordingly bent downwardly. Rectangular slots or cavities 7, Fig. 5, which extend through the upper flange of the girder into the web 5 are provided at each side of the track rail to receive hook headed bolts 9, to which rail-engaging cleats are secured by nuts 16, the portions of the concrete block below the slots being provided with relatively broader cavities to allow the hooked heads of the bolts to be turned through 90 degrees. In order to withstand heavy lateral stresses on the permanent way a rib 17 is welded to the girder 3 at each side of the base of the track rail, the cleats 18, 18<SP>1</SP> being shaped accordingly. In a modification Fig. 7, the ends of aT-sectioned girder 3<SP>1</SP> are anchored in concrete blocks 2<SP>1</SP> by a metal reinforcing rod which is inserted through a hole in the web and formed into two loops 19, 19<SP>1</SP>. The rod is preferably welded to the web in the region of the hole therethrough. As shown, the upper surface of the girder has a transverse convexity which reduces the area of contact with the track rail secured to it.
Patent GB-1417677-A (GB)
Title: Printer positioning system
IPC: B41J1/32
Filed: 1974-05-01
Abstract: 1417677 Printers INTERNATIONAL BUSINESS MACHINES CORP 1 May 1974 [27 June 1973] 19040/74 Heading G4H [Also in Division H2] A printer positioning system comprises a type carrier with character locations equally spaced about an axis of rotation, a stepper motor to rotate the type carrier, and a motor control circuit, the number of steps between character locations being equal to the number of phases of the motor. As disclosed, the motor has 4 phases and rotates 2 degrees per step, the character locations being spaced at 8 degrees, and the type carrier has 3 sets of 15 character locations each, for printing on cheques. N, S, E and W windings of the motor are energized in pairs in the sequence NE, SE, SW, NW by a Grey code counter 39 driven by an oscillator 36 while a "run" pulse 41 is present, the motor being initially detented in the NE position which corresponds to the centre line of a character location. However, after the second oscillator pulse, a damp pulse generator 37 drives the counter 39 back one step, from SW to SE, to damp out perturbations introduced on start up due to motor hunting. After the "run" pulse ceases, a stop pulse generator 38 produces two pulses to return the motor to the detent NE position.
Patent GB-754783-A (GB)
Title: Splitting up of hydroperoxides of alkyl aromatic hydrocarbons by means of acid catalysts
Filed: 1954-06-29
Abstract: Alkyl aromatic hydroperoxides are decomposed by sulphuric acid as catalyst by a process wherein the hydroperoxide is brought into contact with porous material on which sulphuric acid with a concentration of over 85 per cent by weight is deposited. Materials specified are coke, pumice and kieselguhr.  The acid is deposited on the porous material by soaking the material in the acid.  The amount of acid on the porous material is usually from 3 to 10 per cent by volume.  The reaction temperature is preferably kept below 50 DEG  C. The hydroperoxide is preferably decomposed in the solution in which it has been formed during oxidation of the corresponding hydrocarbon. With a 30-60 per cent hydroperoxide solution the amount of catalyst used is about 20-30 per cent by weight.  In examples (1) a solution of 1 : 1-diparatolylethane hydroperoxide is decomposed to para-cresol and para-methyl acetophenone using 10 per cent by weight of pumice power on which 4 per cent by volume of 96 per cent sulphuric acid is deposited; (2) a solution of cumene hydroperoxide is decomposed to phenol and acetone using a pumice catalyst containing 6 per cent by volume of 90 per cent sulphuric acid.
Patent GB-268619-A (GB)
Title: Process for the manufacture of blades or the like with bolster and tang and the products thereby obtained
IPC: B21D53/64
Filed: 1926-07-31
Abstract: 268,619. Gerling, E. July 31, 1926. Fixing by welded attachments. - The bolster b of a knife blade &c. is formed separately from the blade a, but in one piece with the tang d by casting, rolling, upsetting, or press. ing, and is welded at e, f to the blade. The latter may be cut out from a steel strip rolled to the required section. Reference has been directed by the Comptroller to Specification 5949/02, [Class 30, Cutlery].
Patent GB-477911-A (GB)
Title: Improvements in or relating to the manufacture of goods of or containing rubber or similar material from aqueous dispersions thereof
IPC: C08C1/15
Filed: 1936-07-10
Abstract: Aqueous dispersions of rubber which have been rendered heat sensitive are coagulated or solidified by subjecting them to high frequency electric currents.  The process may be applied to the production of goods of or containing rubber by operations such as mass moulding, spreading, extruding or dipping from aqueous dispersions of rubber; e.g. sheets and tapes may be produced by applying the dispersion to a backing material such as cotton fabric and passing the whole through a high frequency electric field, the backing may or may not be subsequently separated from the rubber.  Cellular rubber is produced if the dispersions are frothed.  Dispersions such as those disclosed in Specifications 284,608, 292,964, 324,104, 326,497, 330,520, 332,525, and 335,621, [all in Class 70], may be used.  Specification 290,313, [Class 70], also is referred to.
Patent GB-408482-A (GB)
Title: Improvements in and relating to thermal switches particularly for electrically heated flatirons and the like
IPC: D06F75/26
Filed: 1933-07-07
Abstract: 408,482. Thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Eskin, S.; 18, Wabon Street, Roxbury, Massachusetts, U.S.A.). July 7,1933, No. 19315. Convention date, July 7, 1932. [Class 38 (v).] A thermal switch particularly for controlling the temperature of an electrically heated flatiron is of the type in which a bimetallic strip is fixed at one end and has the free end biassed by a U-shaped resilient member to give a snap action. The strip 15 is mounted at 17 on the frame of the iron and a resilient member 20 is mounted in compression between the free end 18 of the bimetallic strip and a projection 22 on a member 23. The member 23 comprises a resilient plate fixed at 17 and having a central aperture in which the strip 15 and spring element 20 are mounted. The free end 23<b> of the element 23 is biassed upwardly by its inherent resilience and engages a stop 30 having screw threaded engagement with the frame. Rotation of a knob 36 on the cover of the iron moves the end 23b of the member 23 and so varies the temperature at which a contact 45 on the strip 15 snaps away from a contact 46 carried on a depending stirrup of member 23. Specifications 144,767, [Class 37], 280,323, [Class 64 (ii)], and 402,243 are referred to.
Patent GB-1215836-A (GB)
Title: Avoiding encrustation of urea and its thermal decomposition products in a drop separator
IPC: C07D251/60
Filed: 1968-04-25
Abstract: 1,215,836. Encrustation of urea and its thermal decomposition products. BADISCHE ANILIN- & SODA-FABRIK AG. 25 April, 1968 [26 April, 1967], No. 19584/68. Heading C2C. [Also in Division C1] Encrustation of urea and its thermal decomposition products in a drop separator (e.g. during melamine synthesis from urea, ammonia and catalysts) located downstream of a liquid urea washing zone in which reaction gas containing urea is freed from its urea content, is prevented by periodically flushing the drop separator with a melt consisting of or containing urea. The periodic flushing may be carried out every 2 to 6 hours, the melt being left in the drop separator 5 to 10 minutes. The melt may also contain biuret or an ammonium or guanidinium salt.
Patent GB-319848-A (GB)
Title: Improvements relating to the fluid treatment of artificial silk threads and filaments
IPC: D06B5/18
Filed: 1928-07-06
Abstract: 319,848. Brandwood, J. July 6, 1928 Yarns, warping and beaming.-In winding a length of permeable fabric simultaneously with artificial silk threads on a perforated cylinder so that the coils of thread and fabric. alternate, to enable the artificial silk threads to be satisfactorily treated with fluids, the threads y may be taken from a beam 9 and the fabric x from a roller 5. The threads' and fabric pass together over guide rollers 12, 11 to the perforated cylinder 13 which is driven by a friction drum 16. The fabric x contacts with the drum 16 to protect the threads from friction stresses. The threads may be drawn direct from bobbins or cheeses held in a creel. Specification 551/13, [Class 15 (i), Dyeing &c., Apparatus for], is referred to.
Patent GB-960815-A (GB)
Title: Process for ventilating the inside parts of trouser-legs
IPC: A41D1/06
Filed: 1963-05-17
Abstract: 960,815. Ventilating trousers. V. MISRAI. May 17, 1963 [Aug. 17, 1962], No. 19676/63. Heading A3V. The crotch area of trousers 1 is provided on the surfaces 3, 4 of the inside leg with eyelet holes 5 for ventilation purposes, the area being provided with an internal lining of material which matches the fabric of the trousers.
Patent GB-664737-A (GB)
Title: Improvements in small arms
IPC: F41A17/46
Filed: 1949-07-27
Abstract: 664,737. Smallarms. SOC. ITALIANA E. BREDA PER COSTRUZIONI MECCANICHE. July 27, 1949. [July 27, 1948] No. 19690/49. Class 119. The unit consisting of a trigger guard 1 and trigger 9 is secured to the stock 2 of a gun by a withdrawable transverse pin 4 which also constitutes a safety device preventing, when suitably set, movement of the trigger. In the form shown the pin is preventing upward movement of a rearwardly extending limb of the trigger, but by a partial rotation of the pin the limb may pass through a slot 8. A spring-controlled member, Figs. 2, and 3 (not shown) engages flats on the pin to hold it in the required adjusted position. In a modification a similar effect is produced by an endwise movement of the pin.
Patent GB-257907-A (GB)
Title: Manufacture of lactic acid esters
IPC: C07C69/68
Filed: 1926-08-11
Abstract: 257,907. Canadian Electro Products Co., Ltd., (Assignees of Matheson, H. W., and Blaikie, K. G.). Sept. 3, 1925, [Convention date]. Lactic acid esters are produced in substantially anhydrous condition by the interaction of alcohols on acetaldehyde cyanhydrin in the presence of water and a mineral acid, the water and cyanhydrin being in substantially equimolecular proportions, and the mineral acid being sufficient to combine with the liberated ammonia. Examples are given of the preparation of ethyl lactate by warming together acetaldehyde cyanhydrin, ethyl alcohol, hydrogen chloride, and the calculated quantity of water, the hydrogen chloride being first dissolved in the alcohol or led into the mixture. In these examples, water is used in equimolecular proportions with the cyanhydrin, and hydrogen chloride is used in from 1 per cent to 10 per cent excess of that required to combine with the ammonia formed. Acetaldehyde cyanhydrin for use in the above preparation is produced by the interaction of substantially anhydrous hydrocyanic acid and anhydrous acetaldehyde in the presence of a, trace of alkali or a cyanide. Hydroxy acid esters.-The Specification as open to inspection under Sect. 91 (3) (a) refers to the production of hydroxy acid esters in general by the reaction of alcohols upon cyanhydrins of aldehydes or ketones in the presence of water and a mineral acid, and describes the preparation of (1) the ethyl ester of furfurylglycollic acid using furfuraldehyde cyanhydrin and ethyl alcohol; (2) the ethyl ester of a-hydroxy-n-valeric acid, using butylaldehyde cyanhydrin and ethyl alcohol; (3) the ethyl ester of a-hydroxyisobutyric acid, using acetone eyanhydrin and ethyl alcohol; (4) the ethyl ester of mandelic acid, using benzaldehyde cyanhydrin and ethyl alcohol. This subjectmatter does not appear in the Specification as accepted.
Patent GB-293834-A (GB)
Title: Improvements in the production of metal plates and sheets for offset printing
IPC: B41N1/08
Filed: 1928-07-09
Abstract: 293,834. I. G. Farbenindustrie Akt.- Ges. July 13, 1927, [Convention date]. Printing-surfaces.-Grained plates for lithographic offset printing are prepared by etching plates of magnesium or magnesium alloys. The graining may be effected by subjecting the rapidly moving plates to the action of very dilute nitric acid for a period of 10 to 100 seconds. Magnesium or an alloy of magnesium and aluminium, with a small proportion of silicon, is particularly suitable for preparing the plates.
Patent GB-317395-A (GB)
Title: An improved lens system for film projectors
IPC: G03B21/20
Filed: 1929-06-28
Abstract: 317,395. I. G. Farbenindustrie Akt.- Ges. Aug. 15, 1928, [Convention date]. Addition to 315,702. Lenses; optical-projection systems.-The lens system described in the parent Specification is used in conjunction with a lamp 1 having the filament 2 nearer to the side adjacent to the lens system, and a reflector 3 behind the lamp. The arrangement is such that the reflected image of the field of light is situated at the position 2<1> close to the condenser, the image of the field of light filling the objective and the image of the reflected image exceeding the aperture of the objective as shown.
Patent GB-890896-A (GB)
Title: Improvements in air-cooled condensers
Inventor: SCHULENBERG FRANZ
IPC: F28F27/02
Filed: 1959-06-10
Abstract: 890,896. Air cooled surface condensers. HAPPEL G.m.b.H. [trading as GEA LUFTKUHLERGESELLSCHAFT HAPPEL G.m.b.H. & CO. KOMM.-GES.]. June 10, 1959, No. 19929/59. Class 64(3) In an air-cooled surface condenser comprising rows of vertical spaced parallel tubes 3 extending from an elongated header 4 to which vapour is supplied through an inlet spaced in the direction of flow from the inlet ends of the tubes, an apertured plate 6 extends approximately horizontally over the whole cross-section of the header and is spaced in the direction of flow from both the inlet and the tubes, the plate apertures 7 having a total cross-sectional area substantially smaller (e.g. from 50 to 70%) than the total crosssectional area of the tubes and being so spaced as to ensure that approximately equal quantities of vapour are supplied to individual tubes. The plate apertures may comprise cylindrical holes (Fig. 14) or holes widening in the direction of flow (Figs. 7 and 8) or slots (Fig. 4) which may extend over a plurality of the tube openings. Guide members 8 formed from the plate material may be provided as shown e.g. in Fig. 8. Apertures of different sizes may be formed in the plate (see Fig. 7), and each aperture may be of smaller cross-section than a tube 3.
Patent GB-855623-A (GB)
Title: Improvements in moulded saddles for cycles, motor cycles, scooters and the like
IPC: B62J1/00
Filed: 1957-06-25
Abstract: 855,623. Cycle saddles. BOURGOIS, J. June 25, 1957 [Nov. 13. 1956], No. 19979/57. Class 136(3). A moulded saddle top 1 comprises at its forward end a pocket 4 (Fig. 1) for engaging the forward end of a saddle frame 2 and a plurality of horizontal catches 6 moulded on to and projecting from its lateral and/or rear internal faces for the attachment of the saddle top 1 to a saddle frame 2. A transverse rib 5 serves as a cross-tie connecting the two sides of the saddle top 1. Each catch 6 is formed with an aperture 7 through which a hook 8 can be engaged for attaching the saddle top 1 to the frame 2. The fixing straps of a rear saddle bag may be used as fastening elements passing through apertures 23 (Fig. 10) in lugs 20. The catches may be disposed in two superposed horizontal planes at the sides of the saddle top and connected in pairs by fastening elements 13 (Fig. 8). Alternatively, as shown in Fig. 13 apertures 31, 32 may be provided in the cantle 11 and frame members 10 respectively so that the saddle top 1 may be clipped on by means of studs 33, 34 moulded to the saddle top.